Door-mounting for heaters.



VJ. R. GAMMETER. DOOR MOUNTING FOR HEATERS.

.wrucmou man FEB. 16. 1.911.

Patnted May 22, 1917.

2 SHEETS-SHEET l.

JOHN R. GAMMETER, OF AKRON, OHIO, ASSIGNOB T0 THE B. F. GOODRCH COMPANY, OF

n NEW YORK, N. Y., A CORPORATION OF NEW YORK.

DOOR-MOUNTING FOR HEATERS.A

Specification of Letters Patent.

Patented May 22, 191'?.

.Application led February 16, 1917. Serial No. 148,980.

To all whom t may concern.'

Be it known that I, JOHN R. GAMMETER, a citizen of the. United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Door-Mountings for.

Heaters, of which the following isA a specification.

This invention relates to the mounting of hinged doors for large chambers, and especially horizontal open-heat steam .vulcanizers. My object is to provide a structure whereby the door may be readily swung on its hinge and* easily and quickly locked and unlocked.

Gf the accompanying drawings,

Figure 1 is a partial front elevation of a vulcanizer door structure embodying my invention.

Fig. 2 is a plan view thereof partly in section on the line 2-2 of Fig. 1

- Fig. 3 is an enlarged section illustrating the'door packing.

In the drawings, 10v is the cylindrical body of the vulcanizer composed of a large tube on the frontend ofwhich is itted -an annular casting 11 forming the door jamb or frame, said framel having a conical doorseat or joint-forming member 12. 13 is the door consisting of an annular rim casting 14and a concave-convex plate 15, said rim casting being lformed with a conical jointforming member 15 complemental to the member 12 and interrupted by an annular groove 16 in which is tted a soft rubber packing ring 17 having a rearwardly orA inwardly extending lip: 18 which works in van enlarged recess 4 at the mouth of the groove 16. This form of packing permits alimited outward movement ofthe locked cover, due to the steam pressure behind it, Without causing leakage, and 'constitutes an improved form 4of theeneral type of packing described in my atent No. 1,199,296 of July 18, 1916. Y j

The usual form -of breech-block or bayonet lock is provided, consisting of Ishort radial projections 19'with beveled forward `ends 20 onthe rim of the door., adapted-to take under similar inwardly-projecting radial members 21 on the door frame when v said door isrotated in its own plane, the

:projections 21 being separated by spaces 22 permitting the endwise opening and closing movement of the door when the latter is swung on its hinge. l

My present invention provides for a circumferential or angular movement of the entire door hinge in order to eiiect the locking and unlocking action. 23, 23 area pair of arms cast on the door rim 1`4 and forming the door portion of the hinge, and 24, 24 are a pair of coperating arms or bosses located between the door arms 23 and pivotally connected therewith vby anv upright hinge pintle 25 which is secured by set-` screws 26 to the bosses 24 and journaled in the arms 23.

The hinge bosses 24 are cast onia seg-l mental carrier-plate 27 which is curved on the arc of a circle concentric with the center of the door 13, and is mounted to slide 'in similarly curved guides 28 formed on the door frame 1l. The holes for the hinge pmtle 25 in the bosses 24 are short slots 29 elongated transversely of the heater axis to permit the accurate vcentering of the door in itsframe byl means of the set-screws 26 and its readjustment when necessary' be- Fig. 1 shows the door unlocked. In this l position it mayv readily be swung" onits hingeto open and close the'heater. With the door closed, its'locking is effected by invsorting a turning-bar in one of the holes 132 and rotating'pinion 31 clockwise in order to slide the carrier plate 27 in a vcontrary or'upward direction. Said plate 27, carrying the entire hinge, rotates the door 13, and

-forces the locking projections 19 thereon under the stationary projections '21. Suffcient clearance or lost motion is'provided in'a direction axially of the heater to .per- Y mit the locking and unlocking movements of the door to take place without undue friction, but by reason of the improved form of packed joint, represented in Figs. 2 and 8, whose conical surfaces permit the swinging movement lof the door and whose flexible packing ring 17 compensates for this slight axial movement, a tight joint is maintained without substantial leakage when the steam pressure isv turned onto the interior of thev heater and serves to force the door outward against the locking projections 21.

It isv possible to reconstruct horizontal yheaters of other types by substituting for their door "frames and doors the lstructure herein described.

It will'be understood that the above details/ of .construction may be considerablyvaried without departing from my invention. j

I claim:

-1.' The combination of aheater-body and a hinged door thereon having members whichl interlock by an an ular movement of the door in the plane o the latter, and a.

hinge -connecting said door and body and angularly movable with the door. p

V2. The combination of a heater-body having a circular door opening, a circular door adapted to close said opening, a hinge carrying said door and mounted to slide concentrically of the door axis to lock and unlock the latter, and coinplemental locking memberson the door and heater body, engaged and disengaged by said sliding movement of' the door hinge. f

3. The combination of a heater-body having a circular door opening and door therefor provided with complemental locking `members engaged and disengaged byl an angular movement of the door in its own plane,v a hinge connectin said door and body and angularly mova le with the door to produce the locking and unlocking move- 4in itsv guide.

ments thereof, and gearing for .eileeting such angular movements of the door hinge. 4. A door structure. for heaters comprising an annular door lframe and acircular door having complemental locking members engaged and disengaged by angular movements of the door in its own plane, said door having a hinge member, a segmental guide on the door frame concentric therewith, and a carrier plate mounted in said guide and provided witha hinge member pivotally connected with the hinge member on the door. l i

5. A door structure for heaters comprising an annular vdoor framepro'vided with a concentric guide, a carrier plate slidably.

mounted in said guide and provided with a gear member engaging a gear which` is journaled on said frame, said plate having l a hinge member, a door having a complemental hinge member pivoted to the firstsaid hinge member, and 'interlocking members onsaid door and frame engaged and disengaged by angular movements of the door produced by sliding saidl carrier plate 6. The combination of a heater body hava circular door opening and door at one end thereof provided with interfitting conidoor and heater 

